In the above example, the iron(III) oxide is the oxidising agent. The term oxidation was originally used to describe reactions in which an element combines with oxygen. The term reduction comes from the Latin stem meaning "to lead back." For example, Cl – has an oxidation state of -1. Oxidation-Reduction Reactions. Which of the following is an oxidation-reduction reaction? What amoeba structure is a finger-like projection of the cell membrane used for moveobtaining foodA Flagella B. Pseudopodia C. VillaD. B) The Metal A ion is reduced and Metal B is oxidized. Take your pick. Which identifies an oxidation-reduction reaction? to trap food2. Another example of oxidation where an element combines with oxygen is the reaction between magnesium metal and oxygen to form magnesium oxide. A) The Metal A ion is oxidized and Metal B is reduced. Electrons are transferred. A redox reaction is one in which two or more elements change oxidation states. Co(OH)2(s) + 2HCl(aq) --> CoCl2(aq) + 2H2O(l) .... Not redox, no oxidation number changes. 1. C) Displacement plating does not involve a change in oxidation states. to al … low the paramecium to moveD. For example, propan-1-ol is produced by the hydroboration-oxidation reaction of propene. Example: The reaction between magnesium metal and oxygen to form magnesium oxide involves the oxidation of magnesium. An oxidising agent is substance which oxidises something else. (a) Oxidation (b) Reduction. your answer ⏬ ★ In this reaction, H2S is changing into S. That is, Hydrogen is being removed from hydrogen sulphide. Now, by definition, the removal of hydrogen from a compound is called oxidation, so, we can say that hydrogen sulphide is being oxidised to sulphur. When present in most compounds, hydrogen has an oxidation state of +1 and oxygen an oxidation state of −2. For example, in the extraction of iron from its ore: Because both reduction and oxidation are going on side-by-side, this is known as a redox reaction. In order to identify a redox reaction, start by assigning oxidation numbers to each element and see if any change. For a simple (monoatomic) ion, the oxidation state is equal to the net charge on the ion. For example: Oxidising and reducing agents. Which answer best describes what is happening in the following reaction? (b)Reduction is the loss of oxygen. Following are some examples of oxidation reactions: Oxidation may be defined as loss of electrons from a substance, the other definition of oxidation reactions states that addition of oxygen or the more electronegative element or removal of hydrogen or the more electropositive element from a substance is called as an oxidation reaction. Heye. In this reaction, propene reacts with diborane (BH 3 ) 2 to form trialkyl borane as an addition product. ZnS(s) + 2O2(g) ---> ZnSO4(s) Which best identifies why the rusting of an iron nail in the presence of water and oxygen is an oxidation-reduction reaction? This addition product is oxidized to alcohol by hydrogen peroxide in the presence of aqueous sodium hydroxide. Question 16: Explain the following in terms of gain or loss of oxygen with two examples each. Which of the following describes redox in displacement plating? Which of the following is an oxidation-reduction reaction? For example: In equation (i), H2 is oxidized to H2O and in equation (ii), Cu is oxidised to CuO. a reaction in which oxidation numbers change. Which of the following is NOT a function of the cilia?A. Cilia3. to sweep food into the paramecium's "mouth" C. to secrete poison to kill predatorsB. Which of the following is an oxidation-reduction reaction? This one is double replacement, or acid-base. Answer : (a) Oxidation is the gain of oxygen. 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